Fix warning in jsonls and whichkey

lua/user/lsp/settings/jsonls.lua

@@ -169,6 +169,9 @@ local schemas = {
 }
 
 local function extend(tab1, tab2)
+  if tab2 == nil then
+    return tab2
+  end
   for _, value in ipairs(tab2) do
     table.insert(tab1, value)
   end

lua/user/whichkey.lua

@@ -143,7 +143,7 @@ local mappings = {
     i = { "<cmd>LspInfo<cr>", "Info" },
     I = { "<cmd>LspInstallInfo<cr>", "Installer Info" },
     j = {
-      "<cmd>lua vim.lsp.diagnostic.goto_next()<CR>",
+      "<cmd>lua vim.diagnostic.goto_next()<CR>",
       "Next Diagnostic",
     },
     k = {
@@ -151,7 +151,7 @@ local mappings = {
       "Prev Diagnostic",
     },
     l = { "<cmd>lua vim.lsp.codelens.run()<cr>", "CodeLens Action" },
-    q = { "<cmd>lua vim.lsp.diagnostic.set_loclist()<cr>", "Quickfix" },
+    q = { "<cmd>lua vim.diagnostic.setloclist()<cr>", "Quickfix" },
     r = { "<cmd>lua vim.lsp.buf.rename()<cr>", "Rename" },
     s = { "<cmd>Telescope lsp_document_symbols<cr>", "Document Symbols" },
     S = {